Niamh Smyth (born 19 April 1978) is an Irish Fianna Fáil politician who has been a Teachta Dála (TD) for the Cavan–Monaghan constituency since the 2016 general election.
She had been a member of Cavan County Council from 2009 to 2016.Smyth was elected as the first president of the Fianna Fáil women's network on 14 September 2015.
In May 2016, she was appointed to the Fianna Fáil Front Bench as Spokesperson for the Arts and Heritage.